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ABSTRAKDosimeter film Radiochromic XR-RV3 merupakan salah satu tipe dosimeter yang
dapat digunakan untuk mengukur dosis pasien pada prosedur kateterisasi jantung
dengan fluoroskopi sebagai pemandu. Namun, perlu dipastikan pengaruh
keberadaan film Radiochromic XR-RV3 terhadap kualitas citra. Penelitian ini
menggunakan fantom Kat Ped sebagai representasi jantung dewasa dan
membandingkan secara kuantitatif kualitas citra fantom yang dieksposi dengan
menggunakan film dan tanpa menggunakan film GafChromic XR-RV3. Kuantitasi
kualitas citra yang digunakan sebagai pembanding adalah Signal to noise ratio
(SNR) dan resolusi kontras tinggi. Signal to noise ratio (SNR) yang diperoleh
dianalisa menggunakan statistik t-test dengan confidence level 95%. Hasil analisa
menunjukkan tidak terdapat perbedaan SNR yang signifikan dengan menggunakan
film dan tanpa menggunakan film pada mode fluoroskopi low dose, normal dose
dan high dose dengan diskrepansi SNR <10%. Pada mode cine 15 fps low dan 15
fps normal, terdapat kenaikan SNR dengan menggunakan film dengan diskrepansi
<13% sedangkan pada mode cine 15 fps boost dan 25 fps coronary tidak terdapat
perbedaan signifikan SNR dengan diskrepansi rerata < 7%. Pada high contrast
analisa t-test untuk kedua mode fluoroscopy dan Cine tidak menunjukkan adanya
perbedaan signifikan dengan hasil non rejected pada confidence level 95%.
ABSTRACTRadiochromic XR-RV3 film dosimeter is a type of dosimeter that can be used to
measure patient dose on cardiac catheterization procedure with fluoroscopy as a
guide. However, it is necessary to ensure the effect of Radiochromic XR-RV3 film
to image quality. This study used a Kat Ped phantom as a representation of the
adult heart and quantitatively compare the image quality by using a phantom that
exposed with film and without using film GafChromic XR-RV3. Quantitation of
image quality used for comparison is the signal to noise ratio (SNR) and high
contrast resolution. Signal to noise ratio (SNR) obtained statistically analyzed
using t-test with 95% confidence level. The analysis results showed no significant
difference in SNR using film and without using film on a low dose mode, the
normal dose, and high dose flouroscopy with SNR discrepancy <10%. In the cine
mode of 15 fps low and 15 fps normal, there is an increased SNR by using film
with discrepancy <13%, while in the cine mode of 15 fps boost and 25 fps
coronary there are no significant differences with mean SNR discrepancy <7%. At
high contrast t-test analysis for both Fluoroscopy and Cine mode, result showed no
significant difference with the results of non-rejected at the 95 % confidence level., Radiochromic XR-RV3 film dosimeter is a type of dosimeter that can be used to
measure patient dose on cardiac catheterization procedure with fluoroscopy as a
guide. However, it is necessary to ensure the effect of Radiochromic XR-RV3 film
to image quality. This study used a Kat Ped phantom as a representation of the
adult heart and quantitatively compare the image quality by using a phantom that
exposed with film and without using film GafChromic XR-RV3. Quantitation of
image quality used for comparison is the signal to noise ratio (SNR) and high
contrast resolution. Signal to noise ratio (SNR) obtained statistically analyzed
using t-test with 95% confidence level. The analysis results showed no significant
difference in SNR using film and without using film on a low dose mode, the
normal dose, and high dose flouroscopy with SNR discrepancy <10%. In the cine
mode of 15 fps low and 15 fps normal, there is an increased SNR by using film
with discrepancy <13%, while in the cine mode of 15 fps boost and 25 fps
coronary there are no significant differences with mean SNR discrepancy <7%. At
high contrast t-test analysis for both Fluoroscopy and Cine mode, result showed no
significant difference with the results of non-rejected at the 95 % confidence level.]
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