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CT Archive

scanman’s casebook: Case 23


A young adult (mid thirties), a known case of non-specific aortoarteritis (Takayasu’s arteritis) was referred for a CT scan of the Abdomen including a CT Aortogram to rule out mesenteric ischemia.
The inital plain (no IV or oral contrast) CT scan did not show any evidence of abdominal pathology. So a CT Aortogram was done.
The following [...]


Note: Though this is a medical post that concerns hospital care in the USA, I believe the issues covered in these videos are universally applicable to hospitals and patients all over the world. I urge everyone, especially those visitors who are not from the USA to view the videos.

In a series of three short [...]

AMS vs Giddiness


via Movin’ Meat: AMS.

I haven’t looked at the numbers lately, but Altered Mental Status, or AMS, must be in the top ten, if not the top five most common ER presentations. AMS, as a triage complaint, is like a bizarre little birthday present for an ER doc. You just don’t know what you’re [...]


The worst case of pulmonary metastases that I have seen. 40-year-old woman, operated for primary lung malignancy (adenocarcinoma) a year ago. Note the reduced lung volume on the right side.
Further Reading:

emedicine article on Lung Metastases [Registration required, Free]

Start Slide Show with PicLens Lite


Diagnosis: Coronary CT Angiogram showing Chronic Total Occlusion of a short segment of proximal LAD with reformation of flow in mid LAD via collaterals from the Conus branch of RCA.*


*Abbreviations used:

AM - Acute Marginal branch of RCA
CTO - Chronic Total Occlusion
D1 - First Diagonal branch of LAD
LAD - Left Anterior Descending artery
LCx - Left [...]


via AuntMinnie [Registration required.Free]

Ordering CT examinations for children younger than age 6 who are admitted to an emergency department for a headache seldom aids in diagnosis, exposes the child to unnecessary radiation, and is a waste of money. While pediatric neurologists and emergency physicians at the Children’s National Medical Center in Washington, DC, weren’t quite [...]


via Buckeye Surgeon: Traumatic Cervical Spine Injury: Is CT now the preferred imaging modality?.

Over 1500 patients were accrued. Radiographic evidence of cervical spine injury was detected in 78 of the patients, with 50 having clinically significant injuries. Here’s where it gets good. CT scan of the cervical spine detected all 50 injuries (100% sensitivity) while [...]


Note: This is the third (and final) case in a short series of CT images of extra-axial intracranial hemorrhages.

Diagnosis: Subarachnoid Hemorrhage.

Subarachnoid hemorrhage (SAH) implies the presence of blood within the subarachnoid space from some pathologic process. SAH causes approximately 5% of all “strokes.” The common medical use of the term SAH refers to the [...]