Radiographic Parameters in Predicting Outcome of Patients with Hepatocellular Carcinoma Treated with Yttrium-90 Microsphere Radioembolization

Table 3

Changes in computed tomography parameters of hepatocellular carcinoma after treatment with selective internal radiotherapy with Yttrium-90 microspheres*.

Parameter	Number (%) of tumors with change^†	Median change	𝑃
Decreased tumor size (𝑛=22) (Figure 3)	15 (68%)	−0.8 (−4.8 to +4.1) cm	0.3
Decreased attenuation (𝑛=11) (Figures 1 and 2)	7 (64%)	−5.7 (−14.8 to +6.1) HU	0.06
Increased percentage of necrosis (Figures 1 and 2)	10 (48%)	—	≤0.001
Margin status (𝑛=20)^‡
Improved	3 (15%)	—	0.2
Remained the same	14 (70%)
Worsened	3 (15%)

∗Computed tomography was done at median 1.5 mo (95% confidence interval, 1.3 to 3.3 mo) after selective internal radiotherapy. Data reported as number (%) or median (range, minimum to maximum).
^†Change from before to after treatment.
^‡Improved, poorly defined became well defined; worsened, well defined became poorly defined.