The language of imaging,
in plain terms.

MRI is a scan that uses a strong magnetic field and radio waves, not radiation, to produce detailed images of soft tissue such as the brain, spine, joints, and ligaments. It is the modality of choice for many injuries because it shows soft-tissue damage that X-ray and CT can miss.

Teleradiology is the practice of transmitting medical images to a radiologist in another location for interpretation. It lets an imaging center reach subspecialty reads without employing every specialty in-house, with studies routed through the center’s existing workflow and reports returned to its system.

A Picture Archiving and Communication System (PACS) is the software an imaging facility uses to store, retrieve, and share medical images. Teleradiology partners connect to a center’s PACS so studies route out for reading and finished reports return without a separate workflow.

A Radiology Information System (RIS) is the software that manages a radiology operation’s scheduling, patient tracking, billing, and reporting. It works alongside the PACS, which stores the images, to run the operational side of imaging.

DICOM (Digital Imaging and Communications in Medicine) is the standard format and protocol for storing and exchanging medical images. Because scanners, PACS, and viewers all speak DICOM, an MRI acquired on one system can be read on another, which is what makes teleradiology and second opinions possible.

In imaging, a modality is a type of scan or the equipment that produces it: MRI, CT, X-ray, ultrasound, and others. Each modality shows different tissue best, so the right one depends on the clinical question and the suspected injury.

Subspecialty radiology is the practice of a radiologist focusing on one area of the body or type of imaging, such as neuroradiology, musculoskeletal, or body imaging. Concentrated volume in one anatomy builds pattern recognition that a generalist reading everything cannot match.

A subspecialist is a radiologist who has trained and concentrated in a specific anatomy or imaging type. Matching a study to a subspecialist in that exact area, rather than a generalist, is how subtle or complex findings are most reliably caught and described.

T1-weighted imaging is an MRI sequence that shows anatomy with high detail, where fat appears bright and fluid appears dark. It is the sequence radiologists use to assess normal structure, bone marrow, and post-contrast enhancement, and it is usually read alongside T2 rather than on its own.

T2-weighted imaging is an MRI sequence in which fluid appears bright, which makes swelling, inflammation, and tissue injury stand out. Because most acute injury involves fluid, T2 is often where a new finding first becomes visible against the darker background of normal tissue.

STIR (Short Tau Inversion Recovery) is an MRI sequence that suppresses the signal from fat so fluid and swelling become highly conspicuous. It is particularly useful for detecting bone marrow edema and soft-tissue injury that other sequences can obscure behind bright fat signal.

Gadolinium is an intravenous contrast agent used in some MRI studies. It highlights areas of increased blood flow or a disrupted blood-brain barrier, which helps characterize inflammation, infection, tumors, and scar tissue. Many musculoskeletal and spine studies are performed without it.

Field strength is the power of an MRI magnet, measured in Tesla, most commonly 1.5T or 3T in outpatient imaging. Higher field strength generally yields more signal and finer detail, though sequence selection, coil choice, and patient positioning also shape image quality.

An artifact is a feature on an image created by the imaging process rather than by anatomy. Motion, metal hardware, and coil issues all produce artifacts. Recognizing one matters because an artifact mistaken for pathology, or pathology dismissed as artifact, changes the report.

A PrecisionPlus v3™ report is Expert Radiology’s illustrated MRI report. It pairs a subspecialty radiologist’s findings with colorized key images and patent-pending custom illustrations, plus a plain-language explanation, so patients, providers, and legal teams can understand the injury without a medical background.

Colorized key images are the patient’s own scan images with the relevant finding highlighted in color and contrasted with normal anatomy. They turn a grayscale image that only a radiologist can read into something a layperson can see and understand at a glance.

A custom medical illustration is a drawing built from the patient’s actual imaging that shows the specific injury on the relevant anatomy. Unlike stock art, it reflects this patient’s findings, which makes complex pathology clear to laypeople reviewing the case.

Report enhancement, sometimes called a V3 overlay, adds colorized images, custom illustrations, and a plain-language explanation to an existing radiology report from another radiologist. It upgrades the readability of a report without re-reading the study from scratch.

A radiology second opinion is an independent re-read of an existing study by another radiologist, ideally a subspecialist in that anatomy. The reviewer works from the original images rather than the original report and issues new findings, which can confirm, refine, or contradict the first read.

Turnaround time is the interval between when a study is submitted and when the finalized report is returned. It depends on study type, volume, and clinical priority. Expert Radiology scopes turnaround at intake, keeps case status visible, and prioritizes urgent reads.

Hedge words are non-committal phrases in a radiology report such as cannot exclude, clinical correlation recommended, or may represent. They manage uncertainty between physicians, but to a non-medical reader they can read as doubt and weaken how clearly a finding is understood.

Credentialing is the process of verifying a radiologist’s licenses, board certification, training, and history before they read studies for a facility or in a given state. Maintaining current credentialing files is what allows reads to be performed compliantly across many states.

The impression is the closing section of a radiology report, where the radiologist states what the findings mean in a short, prioritized summary. Referring providers and non-medical readers often read it first, so an impression that hedges or buries the key finding weakens the whole report.

The findings section is the body of a radiology report, describing what is visible on the images in anatomic order. It records observations with the detail needed to support the impression, including relevant negatives, which are the structures checked and found normal.

Prior studies are a patient’s earlier scans, used for comparison. Reading a study against priors is how a radiologist distinguishes a new finding from a stable pre-existing one, and it is often the single most useful piece of context for assessing whether an injury is acute.

An overread is a second interpretation of a study that has already been reported, performed by another radiologist. It is used for quality assurance, subspecialty input, or when a referring provider wants a focused re-examination of a specific clinical question.

Structured reporting is the practice of organizing a radiology report into consistent, predictable sections and standard language rather than free-form narrative. Consistency makes reports easier to compare across studies and easier for a non-medical reader to follow.

A relevant negative is a structure or condition the radiologist explicitly checked and found normal. Documenting them shows the read was thorough and narrows what the imaging can and cannot support, which is part of what makes a report defensible under later scrutiny.

A demand package is the documented account a legal team assembles to present a claim, combining the liability narrative, medical records, imaging, billing, and the impact on the person. It is built to persuade a non-medical reader, which is why clear imaging evidence matters so much.

A defensible report is one whose findings are authored and signed by a credentialed radiologist, tied to the specific images, and stated using standard criteria, so they hold up under scrutiny. Visual elements illustrate documented findings rather than adding claims the images do not support.

In radiology, an expert witness is a credentialed radiologist who can explain imaging findings in a legal setting. Whether and how that testimony is used depends on the case, the retained expert, and the court. The imaging report itself is documentation, not testimony.

A medical lien is an arrangement in which a provider treats a patient on a personal-injury claim and is paid from the eventual settlement rather than up front. Lien-based care depends on clear documentation of injury, which makes legible imaging evidence valuable.

In injury cases, causation is the link between the incident and the documented injury. Imaging supports causation when findings, acuity markers, and comparison with prior studies help distinguish a new injury from pre-existing or incidental changes. It is a clinical and legal judgment, not a single image.

A records review is a structured read of a person’s medical documentation to establish what was diagnosed, treated, and imaged, and when. On the imaging side it means reconciling the studies performed against the reports issued, which is where missing priors and unread studies surface.

Acuity describes how recent an injury appears on imaging. Markers such as bone marrow edema, fluid, and the absence of chronic change help place a finding in time. Acuity is an imaging impression rather than a date, and it is stated with the certainty the images actually support.

A pre-existing condition is a finding that was present before the incident in question. Degenerative change is common and often asymptomatic, so imaging alone rarely settles the question. Comparison with prior studies and acuity markers are what let a radiologist speak to it responsibly.

Chain of custody is the documented record of who handled a study and when, from acquisition through interpretation. For imaging it means the DICOM data can be traced to its source scanner and study date, so the images relied on are demonstrably the ones acquired.

Layperson-readable evidence is documentation a non-medical reader can follow without translation. In imaging that means colorized key images and illustrations tied to specific documented findings, so laypeople can see what the report describes rather than take it on faith.

A disc herniation occurs when the soft center of a spinal disc pushes through its outer wall, sometimes pressing on nearby nerves. On MRI it is described by level, for example L4-L5, and by type, and it is one of the most common findings in spine injury cases.

Spinal stenosis is a narrowing of the spinal canal or the openings where nerves exit, which can compress the spinal cord or nerve roots. MRI shows where and how severely the space is narrowed, which helps connect imaging to a patient’s symptoms.

Radiculopathy is the set of symptoms, such as pain, numbness, or weakness, that occurs when a spinal nerve root is compressed or irritated, often by a disc herniation or stenosis. Imaging identifies the structural cause that may explain the reported symptoms.

A rotator cuff tear is a tear in one of the tendons that stabilize the shoulder. MRI distinguishes a partial tear from a full-thickness tear and shows its size and location, detail that matters for treatment decisions and for documenting a shoulder injury.

An annular tear is a disruption in the outer fibrous ring of a spinal disc. It can appear on MRI as a high-intensity zone on T2 imaging. Annular tears are a recognized pain generator, though they are also found in people without symptoms, so imaging is read alongside the clinical picture.

Facet arthropathy is degenerative change in the small paired joints at the back of each spinal segment. MRI shows joint space narrowing, fluid, and bone changes. It is common with age and frequently pre-existing, which is why comparison with prior studies matters when it appears after an incident.

Bone marrow edema is fluid within bone, seen best on STIR and T2 sequences. It is one of the more useful acuity markers on MRI because it typically reflects recent injury such as a contusion or occult fracture, and it resolves over time rather than persisting indefinitely.

A labral tear is a tear in the ring of cartilage that deepens the shoulder or hip socket. MRI, often with contrast placed into the joint, shows the tear location and pattern. Labral injury is a common finding in shoulder and hip pain after trauma.

A meniscal tear is a tear in one of the two cartilage pads that cushion the knee. MRI shows the tear pattern and location, which guides whether treatment is conservative or surgical. Degenerative meniscal change is common with age and is distinguished from acute tearing by its appearance.

A sprain is a stretch or tear of a ligament, graded from mild fiber disruption to complete rupture. MRI shows the grade and the specific ligament involved, detail a physical examination alone cannot establish, which is what makes imaging valuable for documenting joint injury.