Early response of hepatic malignancies to locoregional therapy - Value of diffusion-weighted magnetic resonance imaging and proton magnetic resonance spectroscopy

Susanne Bonekamp, Jialin Shen, Nouha Salibi, Hong Chen Lai, Jeff Geschwind, Ihab R Kamel

Research output: Contribution to journalArticle

Abstract

PURPOSE: The objective of our study was to determine the usefulness of the diffusion-weighted magnetic resonance imaging and proton magnetic resonance spectroscopy (H-MRS) of hepatic malignancies for the assessment of response to locoregional treatment. METHODS: Forty-four patients (29 men; mean age, 58 years) with hepatic malignancies were treated locally. Magnetic resonance imaging examinations obtained before and at 1 and 6 months after transarterial chemoembolization were analyzed retrospectively. Imaging criteria included change in tumor size, percentage of enhancement in the arterial and portal venous phases, diffusion-weighted magnetic resonance imaging apparent diffusion coefficients, and choline concentration by quantitative H-MRS. Response to treatment was grouped according to RECIST (Response Evaluation Criteria in Solid Tumors) and European Association for the Study of the Liver (EASL) criteria based on magnetic resonance imaging at 6 months after treatment. Statistical analysis used paired t test, Fisher exact test, and univariate and multivariate Cox proportional hazards models. RESULTS: Before treatment, the median tumor diameter was 6 cm; at 6 months after treatment, median tumor diameter was 5.1 cm. According to RECIST and EASL, 66% of the patients achieved partial response, 31% had stable disease, and 3% of the patients showed progressive disease. One month after transarterial chemoembolization, apparent diffusion coefficient increased (P <0.14), and mean choline concentration of the tumors decreased (P <0.008). CONCLUSIONS: Diffusion-weighted imaging and hepatic choline levels by H-MRS could predict response to locoregional therapy.

Original languageEnglish (US)
Pages (from-to)167-173
Number of pages7
JournalJournal of Computer Assisted Tomography
Volume35
Issue number2
DOIs
StatePublished - Mar 2011

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Diffusion Magnetic Resonance Imaging
Liver
Choline
Neoplasms
Therapeutics
Magnetic Resonance Imaging
Proportional Hazards Models
Proton Magnetic Resonance Spectroscopy

Keywords

  • diffusion-weighted imaging
  • liver cancer
  • magnetic resonance imaging
  • magnetic resonance spectroscopy

ASJC Scopus subject areas

  • Radiology Nuclear Medicine and imaging

Cite this

Early response of hepatic malignancies to locoregional therapy - Value of diffusion-weighted magnetic resonance imaging and proton magnetic resonance spectroscopy. / Bonekamp, Susanne; Shen, Jialin; Salibi, Nouha; Lai, Hong Chen; Geschwind, Jeff; Kamel, Ihab R.

In: Journal of Computer Assisted Tomography, Vol. 35, No. 2, 03.2011, p. 167-173.

Research output: Contribution to journalArticle

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AU - Geschwind, Jeff

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