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Split-Bolus Multidetector-Row Computed Tomography Technique for Characterization of Focal Liver Lesions in Oncologic Patients

View Article: PubMed Central - PubMed

ABSTRACT

Background: In oncologic patients, the liver is the most common target for metastases. An accurate detection and characterization of focal liver lesions in patients with known primary extrahepatic malignancy are essential to define management and prognosis.

Objectives: To assess the diagnostic accuracy of the split-bolus multidetector-row computed tomography (MDCT) protocol in the characterization of focal liver lesions in oncologic patients.

Patients and methods: We retrospectively analyzed the follow-up split-bolus 64-detector row CT protocol in 36 oncologic patients to characterize focal liver lesions. The split-bolus MDCT protocol by intravenous injection of two boluses of contrast medium combines the hepatic arterial phase (HAP) and hepatic enhancement during the portal venous phase (PVP) in a single-pass.

Results: The split-bolus MDCT protocol detected 208 lesions and characterized 186 (89.4%) of them: typical hemangiomas (n = 9), atypical hemangiomas (n = 3), cysts (n = 78), hypovascular (n = 93) and hypervascular (n = 3) metastases. Twenty two (10.6%) hypodense lesions were categorized as indeterminate (≤5 mm). The mean radiation dose was 24.5±6.5 millisieverts (mSv).

Conclusion: The designed split-bolus MDCT technique can be proposed alternatively to triphasic MDCT and in a single-pass to PVP in the initial staging and in the follow-up respectively in oncologic patients.

No MeSH data available.


Related in: MedlinePlus

A, Split-bolus 64-detector row CT technique in a patient with lung cancer, multiple cysts, and subscapular typical hemangioma; B, The cysts appear hypodense and the hemangioma isodense to the hepatic vessels on the delayed phase at 5 minutes.
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fig30164: A, Split-bolus 64-detector row CT technique in a patient with lung cancer, multiple cysts, and subscapular typical hemangioma; B, The cysts appear hypodense and the hemangioma isodense to the hepatic vessels on the delayed phase at 5 minutes.

Mentions: Representative cases by split-bolus MDCT are shown in Figures 2 - 4.


Split-Bolus Multidetector-Row Computed Tomography Technique for Characterization of Focal Liver Lesions in Oncologic Patients
A, Split-bolus 64-detector row CT technique in a patient with lung cancer, multiple cysts, and subscapular typical hemangioma; B, The cysts appear hypodense and the hemangioma isodense to the hepatic vessels on the delayed phase at 5 minutes.
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC5036402&req=5

fig30164: A, Split-bolus 64-detector row CT technique in a patient with lung cancer, multiple cysts, and subscapular typical hemangioma; B, The cysts appear hypodense and the hemangioma isodense to the hepatic vessels on the delayed phase at 5 minutes.
Mentions: Representative cases by split-bolus MDCT are shown in Figures 2 - 4.

View Article: PubMed Central - PubMed

ABSTRACT

Background: In oncologic patients, the liver is the most common target for metastases. An accurate detection and characterization of focal liver lesions in patients with known primary extrahepatic malignancy are essential to define management and prognosis.

Objectives: To assess the diagnostic accuracy of the split-bolus multidetector-row computed tomography (MDCT) protocol in the characterization of focal liver lesions in oncologic patients.

Patients and methods: We retrospectively analyzed the follow-up split-bolus 64-detector row CT protocol in 36 oncologic patients to characterize focal liver lesions. The split-bolus MDCT protocol by intravenous injection of two boluses of contrast medium combines the hepatic arterial phase (HAP) and hepatic enhancement during the portal venous phase (PVP) in a single-pass.

Results: The split-bolus MDCT protocol detected 208 lesions and characterized 186 (89.4%) of them: typical hemangiomas (n = 9), atypical hemangiomas (n = 3), cysts (n = 78), hypovascular (n = 93) and hypervascular (n = 3) metastases. Twenty two (10.6%) hypodense lesions were categorized as indeterminate (≤5 mm). The mean radiation dose was 24.5±6.5 millisieverts (mSv).

Conclusion: The designed split-bolus MDCT technique can be proposed alternatively to triphasic MDCT and in a single-pass to PVP in the initial staging and in the follow-up respectively in oncologic patients.

No MeSH data available.


Related in: MedlinePlus