Caption: Figure 3: (a) The CT images for the same cross section at different stress stages; (b) the image created from the differences in CT number
at each position of (a), which shows the cracks more clearly.
The relationship between CT number
and rock density is known from  as follows:
Clinical studies on thyroid CT number
in chronic thyroiditis.
Our study also analyzed that benign fatty tumors can be reliably diagnosed on plain CT scan based on CT numbers
of fat density without any need of endoscopy or surgery for histopathology.
Merging of regions with similar CT numbers
: merge two neighboring regions if the difference in CT number
is less than a threshold of 40.
 Nonstandard abbreviations: tRNA, transfer RNA; T2D, type 2 diabetes; SNP, single-nucleotide polymorphism; m[s.sup.2], 2-methylthio; [t.sup.6]A, [N.sup.6]- threonylcarbamoyladenosine; m[s.sup.2][t.sup.6]A, 2-methylthio-[N.sup.6]-threonylcarbamoyladenosine; KO, knockout (mice); qPCR, quantitative PCR; qPCR-MtR, qPCR-based method for detecting methylthiolation of tRNA; WT, wild-type; Ct, threshold cycle; [Ct.sub.r1], Ct number
obtained from a qPCR with a cDNA template generated by primer r1; d[Ct.sub.r2r1], [Ct.sub.r2] - [Ct.sub.r1]; [T.sub.m], melting temperature; [CIR.sub.30], corrected insulin response at 30 min; A37, adenine at position 37.
Measured CT number
= 1,000 x ([[mu].sub.x] - [[mu].sub.water])/ [[mu].sub.water] 
In the early times, CT technology workers were defined as the standard CT number
Hp by the attenuation coefficient of water, which was expressed as
A region of interest (ROI) of two-thirds of the diameter of the vessel (30–50 mm [sup]2) was chosen on the arteries, portal vein, and inferior vena cava (at the site where the renal vein joins the vena cava and at the second hepatic portal vein level) to measure the CT number
. Another ROI (50 mm [sup]2) was chosen on the erector spinae on the same image to measure the CT number
and standard deviation (SD).
The ROI trigger threshold is set at 150 HU at 120 kVp, with scanning initiated 6 seconds after the threshold CT number
Dengue RNA (serotype 2) was found to be present at a very low amount (i.e., at a real-time PCR cycle Ct number
of 39-40) (Fig.
This is consistent with the change in the average CT number
. After 21 days, specimen porosity decreased by 11.6% and 6.3% for DW-1 and DW-2, respectively.