Term
| Time for hepatic arterial phase |
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Definition
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Term
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Definition
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Term
| Hypovascular hepatic mets would be best visualized in what phase of enhancement? |
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Definition
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Term
| Liver equilibrium phase occurs at what time? |
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Definition
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Term
| What phase of liver enhancement would NOT be ideal for tumor eval? |
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Definition
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Term
| The most common malignant hepatic neoplasms are mets, which usually appear how on ct images? |
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Definition
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Term
| HCCs may appear ___dense on noncon imaging |
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Definition
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Term
| Hemangiomas will typically become ___dense with surrounding parenchyma |
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Definition
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Term
| Characterized by peripheral globular enhancement during initial post-contrast imaging |
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Definition
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Term
| Round or oval masses with attenuation close to water (0 - 20 HU); hallmark is lack of enhancement with IV contrast admin |
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Definition
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Term
| What neoplasm typically appears hyperdense or hypervascular on arterial phase imaging of liver? |
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Definition
| HCCs Hepatocellular carcinoma |
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Term
| Characterized by intense homogeneous enhancement with CM- generally with a hypodense central scar |
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Definition
| Focal nodular hyperplasia |
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Term
| The appearance of mets on ct imaging |
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Definition
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Term
| During this phase, hypervascular tumors or tumors supplied by the hepatic artery undergo max enhancement |
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Definition
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Term
| At which phase are hypervascular tumors made conspicuous by the unenhanced parynchema around them? |
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Definition
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Term
| Liver phase which shows hypovascular lesions the best |
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Definition
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Term
| Timing for early arterial phase |
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Definition
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Term
| At this liver phase, the hepatic arterial supply is well opacified with little or no parenchymal enhancement |
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Definition
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Term
| Optimal liver phase for angiographic applications (ie preop planning) |
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Definition
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Term
| Delayed phase of hepatic data acquisition is after ___ - ___ mins |
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Definition
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Term
| This hepatic phase demonstrates COMPLETE fill in of hemangiomas- what time? |
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Definition
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Term
| What phase shows fatty infiltrates and calcifications on liver images |
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Definition
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Term
| Optimal liver phase for hemangiomas and Hepatocellular carcinoma HCCs |
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Definition
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Term
| Prime demonstration of hemangioma fill in and FNH central scar fill in |
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Definition
| Delayed phase (5-20 mins) |
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Term
| CT density of the unenhanced spleen |
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Definition
| 40-60 HU (approx 10 less than liver) |
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Term
| Preferred timing for CT acquisitions of the spleen |
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Definition
| Portal venous phase (60-70 sec) |
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Term
| Most pancreatic tumors appear ____dense in comparison with surrounding parenchyma |
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Definition
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Term
| The pancreatic phase of parynchemal enhancement is a ___ ____ phase at ___- ___ seconds |
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Definition
Delayed arterial phase;
35-45 seconds |
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Term
| Pre-contrast phase of the pancreas helps show |
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Definition
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Term
| Pancreas: max opacifications of surrounding vasculature for aorta and SMA; how many sec? |
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Definition
| Arterial phase; 20-25 sec |
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Term
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Definition
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Term
| What imaging technique is usually needed to fully characterize adrenal pathology |
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Definition
| Both pre- and post-contrast (adrenal washout technique) |
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Term
| Delayed phase of 10-15 mins may be employed for tumor characterization of what anatomy? |
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Definition
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Term
| Adrenal hyperplasia is usually associated with a disorder of the ____ function |
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Definition
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Term
| Adrenals: ROI mesurements on pre con imaging less than ____ HU indicate a benign process |
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Definition
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Term
| Adrenals: washout technique for differentiation between mets and adenomas occur at what phase? |
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Definition
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Term
| Hyperdense cysts on GU imaging, have HUs between ___ - ___ |
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Definition
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Term
| Characterized by the formation of numerous renal cysts |
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Definition
| PKD (polycystic kidney disease) |
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Term
| ROI measurement of less than ____ HU for a renal mass is characterized as an angiomyolipoma |
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Definition
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Term
Most common primary renal malignancy - renal cell carcinoma
corticomedullary phase occurs at ___ - ___ sec - |
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Definition
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Term
| Max differentiation between renal cortex and medulla? how many seconds? |
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Definition
| Corticomedullary; late arterial: 30-40 sec |
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Term
| Renal: what phase occurs after 70-90 secs? |
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Definition
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Term
| Phase in which renal cortex and medulla reach equilibrium. occurs at what time? |
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Definition
| Nephrographic phase; 70-90 sec |
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Term
| Renal: optimal CM phase for parenchymal lesions; at what time? |
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Definition
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Term
| Renal: this phase occurs after approx 3 mins |
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Definition
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Term
| At what phase is the CM excreted into the renal calyces, opacifying the renal pelvis, ureters, and bladder? |
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Definition
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Term
| This phase best shows filling defects and the potential lesions involving the urothelium (a unique, highly specialized epithelium lining the lower urinary tract) |
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Definition
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Term
| Arterial phase for kidneys and urinary tract occurs at what time? |
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Definition
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Term
| At what time is the aorta and renal arteries most enhanced? how many seconds? |
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Definition
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Term
| This phase demonstrates the potential vascular involvement of a renal mass |
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Definition
| Corticomedullary phase (late arterial, 30-40s) |
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Term
| excretory phase shows KUB with a delay of ____- ____ |
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Definition
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