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Re: Re: Acquiring Dental RVG on Linux



Am Sat, Jan 16, 2021 at 11:11:21PM +0100 schrieb Karsten Hilbert:

> 	http://www.44342.com/network-protocols-f546-t2480-p1.htm
>
> 	https://forum.dcmtk.org/viewtopic.php?t=1075

I have downloaded the R1.rvg and looked at its metadata.

	---- ExifTool ----
	ExifTool Version Number         : 12.14
	---- System ----
	File Name                       : R1.rvg
	Directory                       : .
	File Size                       : 1413 KiB
	File Modification Date/Time     : 2007:01:09 11:45:14+01:00
	File Access Date/Time           : 2021:01:16 23:05:30+01:00
	File Inode Change Date/Time     : 2021:01:16 23:06:03+01:00
	File Permissions                : rw-------
	---- File ----
	File Type                       : DICOM
	File Type Extension             : dcm
	MIME Type                       : application/dicom
	---- DICOM ----
	File Meta Info Group Length     : 178
	File Meta Info Version          : 0 1
	Media Storage SOP Class UID     : Digital Intra-oral X-Ray Image Storage - For Processing
	Media Storage SOP Instance UID  : 1.2.250.1.90.3.11454021.1168269456.890
	Transfer Syntax UID             : JPEG Lossless, Non-Hierarchical, First-Order Prediction (Process 14-1)
	Implementation Class UID        : 1.2.250.1.90.50.1.3.2.1
	Implementation Version Name     : TW_6_5_3_0
	Specific Character Set          : ISO_IR 100
	Image Type                      : ORIGINAL\PRIMARY\
	SOP Class UID                   : Digital Intra-oral X-Ray Image Storage - For Processing
	SOP Instance UID                : 1.2.250.1.90.3.11454021.1168269456.890
	Study Date                      : 2007:01:08
	Series Date                     : 2007:01:08
	Acquisition Date                : 2007:01:08
	Content Date                    : 2007:01:08
	Study Time                      : 16:17:13
	Series Time                     : 16:17:36
	Acquisition Time                : 16:17:36
	Content Time                    : 16:17:36
	Accession Number                :
	Modality                        : IO
	Presentation Intent Type        : FOR PROCESSING
	Manufacturer                    : Kodak-Trophy
	Institution Name                :
	Referring Physician Name        : SYSTEM
	Study Description               :
	Performing Physician Name       : SYSTEM
	Performing Physician ID Sequence:
	Manufacturers Model Name        : RVG 6 ACCESS
	Anatomic Region Sequence        :
	Start Of Item                   : ..SH.T-11180 ...SH.SNM3...LO.Mandible
	Primary Anatomic Structure Sequence:
	Start Of Item                   : ..SH.T-54410 ...SH.SNM3...LO$Mandibular left first premolar tooth
	DICOM 0009,0011                 : TROPHY
	DICOM 0009,1105                 : 1.3.2.1
	DICOM 0009,1109                 : 0
	DICOM 0009,110A                 : 2992982218
	DICOM 0009,1111                 : 3
	DICOM 0009,1112                 : 0
	DICOM 0009,1115                 : 0
	DICOM 0009,1117                 : 0
	DICOM 0009,1118                 : 0
	DICOM 0009,1119                 : 0
	DICOM 0009,111A                 : 00
	DICOM 0009,111B                 : 0.0185\0.0185
	DICOM 0009,1131                 : 1
	DICOM 0009,1133                 : 3686
	DICOM 0009,1134                 : 4095
	Patient Name                    : Exemple^ZZZZZ
	Patient ID                      : 1141011091111161014610710010511546121101102120109100924848484848
	Patient Birth Date              :
	Patient Sex                     : O
	Device Serial Number            : TAVE125
	Software Version                : TW 6.5.3.0
	Spatial Resolution              : 20
	Imager Pixel Spacing            : 0.018500\0.018500
	Date Of Last Calibration        : 2005:01:20
	Time Of Last Calibration        : 00:00:00
	Positioner Type                 : NONE
	Positioner Primary Angle        : 0
	Detector Type                   : SCINTILLATOR
	Detector ID                     :
	Detector Manufacturer Name      : Kodak-Trophy
	Detector Manufacturers Model Name:
	Field Of View Origin            : 0\0
	Field Of View Rotation          : 0
	Field Of View Horizontal Flip   : NO
	Study Instance UID              : 1.2.250.1.90.1.11454021.1168269433.453
	Series Instance UID             : 1.2.250.1.90.2.11454021.1168269456.890
	Study ID                        :
	Series Number                   : 1
	Instance Number                 : 1
	Patient Orientation             : PL\F
	Image Laterality                : L
	Image Comments                  : essai
	Samples Per Pixel               : 1
	Photometric Interpretation      : MONOCHROME2
	Rows                            : 1600
	Columns                         : 1200
	Bits Allocated                  : 16
	Bits Stored                     : 12
	High Bit                        : 11
	Pixel Representation            : Unsigned
	Burned In Annotation            : NO
	Pixel Intensity Relationship    : LIN
	Pixel Intensity Relationship Sign: -1
	Rescale Intercept               : 0
	Rescale Slope                   : 1
	Rescale Type                    : US
	Lossy Image Compression         : 00
	Acquisition Context Sequence    :
	Icon Image Sequence             :
	Start Of Item                   : (Binary data 19302 bytes, use -b option to extract)
	Presentation LUT Shape          : IDENTITY
	Pixel Data                      : (Binary data 0 bytes, use -b option to extract)
	Start Of Item                   :
	Start Of Item                   : (Binary data 1426138 bytes, use -b option to extract)
	End Of Sequence                 :

It alludes to LUT and Rescale and Pixel Intensity
Relationship and such.

	https://dicom.innolitics.com/ciods/rt-image/rt-image/00281041

I wonder what those low-dose images say, which come out not
so well when captured directly.

It also carries a vendor section, which might contain further
hints.

Karsten
--
GPG  40BE 5B0E C98E 1713 AFA6  5BC0 3BEA AC80 7D4F C89B


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