Media 000613768: Braincase
Restricted Download
Type Volumetric Image Series
Modality X-Ray Computed Tomography (CT/microCT)
Media represents biological specimen

Media Display

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Project
· Public

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GENERAL DETAILS Field Definitions

Media ID
000613768
Media type
Volumetric Image Series
Object element or part
Braincase
Object represented
Object taxonomy
Archaeopteryx lithographica
Side
--
Orientation
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Short description
HRXCT scan - braincase
Full description
University of Texas High-Resolution X-ray CT Facility Archive 0772 Milner: Archaeopteryx: Corrected scans of the brain case of Archaeopteryx lithographica [NHMUK PV OR 37001; Solnhofen Limestone, Tithonian (late Jurassic), Bavaria, Germany; collected 1861, acquired by Dr. Carl Haberlein; purchased by the British Museum 1862] for Angela Milner of the Department of Palaeontology, The Natural History Museum (London), John Cookson of the University of Hertfordshire at Hatfield, and Timothy Rowe of The University of Texas at Austin. Original scan images on Archive 0709. hikv: High-energy scan; scanned by Richard Ketcham, 24-25 June 2002. II, 180 kV, 0.133 mA, no filter, air wedge, no offset, slice thickness 1 line (= 0.0230 mm), S.O.D. 67 mm, 2000 views, 3 samples per view, inter-slice spacing 1 line (= 0.0230 mm), field of reconstruction 21.5 mm, reconstruction offset 5000, reconstruction scale 300, reconstruction angle 112°. Acquired with 21 slices per rotation. Total slices = 1313. Scan stopped and restarted to acquire additional slices after original slices 1197 and 1281; restart caused 2 slices of overlap at slice 1197, so slices 1198 and 1199 deleted and subsequent slices were renumbered. hikv/8bitunc: 1024x1024 8-bit JPG of uncorrected slice data. Re-leveled from 16-bit with maximum grayscale=25000 and minimum=3000. hikv/16bitcor: 1024x1024 16-bit TIFF images of scan data corrected for ring artifacts by processing raw sinogram data and re-reconstructing. Corrections done by Richard Ketcham in IDL v5.5 using routine “RK_SinoRingProcSimul” with options BIN_WIDTH=21 and BEST_OF_5 set.
Creator
Richard Ketcham
Date created
June 24, 2002
Date uploaded
March 21, 2024

FILE OBJECT DETAILS Field Definitions

File name
File format(s)
ZIP archive, TIFF
File size
1.26 GB
Image width
988
Image height
795
Color space
BlackIsZero
Color depth
16
Compression
Uncompressed
X pixel spacing
0.020500
Y pixel spacing
0.020500
Z pixel spacing
0.023000
Pixel spacing units
Mm
Slice thickness
--
Number of images in set
1,313

IMAGE ACQUISITION AND PROCESSING AT A GLANCE Field Definitions

Number of parent media
0
Number of processing events
1 (0 steps)
Modality
X-Ray Computed Tomography (CT/microCT)
Device
Varian Medical Systems (Bio-Imaging Research, Inc) ACTIS CT scanner with FeinFocus X-ray source, The University of Texas High-Resolution X-ray Computed Tomography Facility (University of Texas at Austin)

OWNERSHIP AND PERMISSIONS Field Definitions

Data uploaded by
Publication status
Restricted Download
Download reviewer
IP holder
Natural History Museum (NHMUK)
Copyright statement
Creative Commons license
--
Morphosource use agreement type
Standard
Permits commercial use
Commercial Use Not Permitted
Permits 3D use
3D Printing Limited
Required archival of published derivatives
On MorphoSource
Funding attribution
DBI-1902242, IIS-9874781
Publisher
oUTCT PEN
Cite as
'From the collections of the Natural History Museum, London' Funding for scanning was provided by NSF grant IIS-9874781 to Tim Rowe. Data upload to MorphoSource was funded by DBI-1902242. The files were downloaded from www.MorphoSource.org, Duke University.
Media preview mode
Interactive/Embeddable
Additional usage agreement
None

IDENTIFIERS AND EXTERNAL LINKS Field Definitions

MorphoSource ARK
MorphoSource DOI
Not assigned
External identifier
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IMAGE ACQUISITION AND PROCESSING IN DETAIL

STEP 1: IMAGE ACQUISITION

Physical object NHMUK:PAL:PV OR 37001 was imaged to create undeposited raw media.

IMAGING DETAILS Field Definitions

Modality
X-Ray Computed Tomography (CT/microCT)
Device facility
The University of Texas High-Resolution X-ray Computed Tomography Facility (University of Texas at Austin)
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Event date
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Software
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Description
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Description attachment
None
Reference attachment
None
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Flux normalization
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Pixel spacing calibration
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Shading correction
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Frame averaging
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STEP 2: IMAGE PROCESSING

Raw media (undeposited) was processed to create derived Media 000613768: Braincase [CTImageSeries] [CT] (this media).

Processing Details Field Definitions

Creator
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Event date
--
Software
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Description
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Description attachment
None

Media produced by this event on MorphoSource

Media 000613768: Braincase [CTImageSeries] [CT] (this media)